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ASiC-E Signed Container Reader

— open it and read it, installing nothing.

36 / 36 Local

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Processed in your browser. Nothing is sent to a server.

Open a .asice or .sce file, take out the document inside, and see who signed it and when — in your browser.

Free · Local · works offline · ASICE · SCE → DOCUMENT · SIGNER

Frequently asked questions

What is a .asice file and why will nothing open it?
It is a signed container: a ZIP holding the actual document plus a signature block, produced when a document is signed with a qualified electronic signature. Operating systems have no handler for the extension, so a double-click does nothing — but the document inside is an ordinary PDF or DOCX, and this page takes it out.
Does this tell me whether the signature is valid?
No, and it deliberately does not pretend to. It reads what the container states — the signatory's name, their national identifier, the claimed signing time and the issuing authority — and shows it as a claim. Confirming that the signature is cryptographically sound and the certificate was not revoked needs a qualified verification service.
Why can a browser not verify a Ukrainian qualified signature?
Ukrainian qualified signatures use DSTU 4145 for the signature and DSTU 7564 for the hash. Neither is part of WebCrypto and no browser implements them, so the arithmetic simply is not available in the page. The alternative — sending your document to a verification service — is the one thing this site does not do.
The container lists two signatories. Is that normal?
Yes. Contracts and accounting documents are routinely signed by more than one person, for example a director and an accountant, and each signature is its own block inside the same container. Every block found is listed separately with its own certificate details.

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